Dual-port planar harmonic mixer for spread spectrum

A harmonic mixer and dual-port technology, which is applied in the field of dual-port planar harmonic mixers, can solve problems such as the failure of harmonic mixers to work, and achieve the effect of simple structure

Pending Publication Date: 2019-12-13
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The following will not list them one by one. In a word, almost all the reported harmonic mixers are three-port mixers, most of them adopt waveguide structure, and most harmonic mixers fail to work in the entire waveguide frequency band.

Method used

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  • Dual-port planar harmonic mixer for spread spectrum
  • Dual-port planar harmonic mixer for spread spectrum
  • Dual-port planar harmonic mixer for spread spectrum

Examples

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Embodiment Construction

[0023] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. The embodiments described in the present invention are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without making creative efforts all fall within the protection scope of the present invention.

[0024] Such as figure 1 Shown is a two-port planar harmonic mixer for spread spectrum, including a radio frequency bandpass filter 1, a radio frequency input matching circuit 2, an antiparallel pair of Schottky diodes 3, a local oscillator IF matching circuit 4 and The local oscillator intermediate frequency low-pass filter 5; the radio frequency bandpass filter 1 is located at the radio frequency input end, and then connected to the radio frequency input matching circuit 2, two anti-parallel Schottky diode pa...

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Abstract

The invention discloses a dual-port planar harmonic mixer for spread spectrum. The dual-port planar harmonic mixer comprises a radio frequency band-pass filter, a radio frequency input matching circuit, Schottky diode pairs which are reversely connected in parallel, a local oscillator intermediate frequency matching circuit and a local oscillator intermediate frequency low-pass filter. The harmonic mixer provided by the invention has the advantages of wide bandwidth and simple circuit structure, can be realized by a pure planar microstrip circuit, and is convenient to integrate with other planar circuits. By adjusting the parameters of each component in the circuit, the structure is suitable for higher harmonic mixing above fourth harmonic mixing, and by combining with a built-in spread spectrum local oscillator of the frequency spectrograph, the microwave frequency band frequency spectrograph can be conveniently expanded to millimeter waves and even terahertz bands.

Description

technical field [0001] The invention belongs to the technical field of planar harmonic frequency mixing, and in particular relates to a dual-port planar harmonic frequency mixer for spectrum spreading. Background technique [0002] Spectrum analyzer is one of the important instruments for signal measurement. Keysight and Rohde & Schwarz are two mainstream companies that can provide spectrum analyzers in the world. Up to now, the analysis frequency upper limit of the mainstream spectrum analyzers provided by the two companies is 26.5GHz and 50GHz, and a spectrum analyzer with a frequency up to 67GHz has also been introduced recently. Of course, the higher the operating frequency of the spectrum analyzer, the more expensive it is. [0003] In order to reduce the user's low-cost requirements for high-frequency measurement, spectrum analyzers usually have options for frequency extension, providing local oscillator and intermediate frequency interfaces for external harmonic mixe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03D7/02G01R23/16
CPCH03D7/02G01R23/16
Inventor 郭健钱澄
Owner SOUTHEAST UNIV
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